Car-ventilating apparatus



Patented July 2, 1895.

YV'IZWESSES UNITED STATES PATENT OFFICE.

CHARLES F. HIRT, OF ERIE, PENNSYLVANIA.

CAR-VENTILATING APPARATUS.

.SPECIIFICATION forming part of Letters Patent No. 542,018, dated July 2, 1 895.

A Application filed November 2, 1394. Serial No. 52 7,739. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES F. HIRT, a citizen of the United States, residing at Erie, in the county of Erie, State of Pennsylvania, have invented certain new and useful Im-, provements in Oar-Ventilating Apparatus, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to devices for automatically opening the ventilating-registers in the upper portion of cars when the temperature therein exceeds the degree desired; and the objects of this invention are to provide, in connection with a series of stretched wires having their ends united together and located under the roof of the car, simple and inexpensive means for opening the air valves and registers of the car, the closing of the valves and registers being accomplished mainly by the contraction of said wires. I attain these objects by the construction illustrated in the accompanying drawings, in which Figure l is a longitudinal vertical section of a carprovided with means for operating the air valves and registers in accordance with my invention. Fig. 2 is a horizontal section of the same, taken between the roof and ceiling of the car, and showing the features of my invention. Fig. 3 is a transverse vertical section taken on line so a: of Fig. 2, adjacent to one end of a car provided with valve and register operating devices in accordance with my invention. Fig. 4 represents in plan view on a large scale the main portion of the operating devices of the invention. Fig. 5 is a horizontal section of the th rec-way cock of the apparatus. Fig. 6 is a diagram showing a modification in which the air-cylinder is dispensed with.

In said drawings, A represents the body of the car, havingtwo air-chambers B lengthwise thereof between the roof at and ceiling 0 thereof, the central portion extending up to the roof between the partitions 19, forming the inner sides of the chamber B, in which partitions are located a series of openings closed by automatically-controlled registers d located preferably between the ordinary hand operated registers e, that are under the control of the brakeman or other train man of the railway. In each end of each air-chamberB there is a short rectangular funnelf, projecting preferably under the front and rear hoods of the roof, and within each funnel are placed two valves. The outer valve 9 is a flap-valve pivoted from its upper edge, and when closed it is in a slightly-inclined position, with its lower edge toward the interior and resting upon the bottom of the funnel f. The inner valve h is rotary, being mounted on pivots projecting centrally from its sides, one of said pivots having a stem h in the form of a crank projecting from the side of the funnel f and by which- A laced under said fioor lengthwise thereof.

Each flue A has therein adjacent to each end a flap-valve a pivoted from its upper edge, and when closed it is in a slightly-inclined position, with its lower edge toward the outer end of the flue A and resting upon the bottom of said flue.

To relieve the air-chambers B from abnormal air-pressure if the registers on the sides of said chambers are nearly closed, said. chambers are provided at each end with downwardly extended fiues B that have their lower ends incommunication with the bottom flues A To automatically control the inductionvalves h and the registers d, (and to take the place of a very long single wire,) a series of wire is stretched in each chamber B lengthwise thereof. One end of the wire is, for example, secured at 2 to one end of the end walls of said chamber and the opposite end to one arm of a centrally-pivoted short lever 3, the pivot of which is secured to the opposite end wall of the chamber B. To the opposite arm of the lever 3 is secured another wire D, that is retained stretched by having its opposite end secured to one arm of a centrally-pivoted short lever 4, the dpivot of which is se-. cured to the opposite end wall of the ChaIIlf: ber B. 'To the opposite end of the lever 4 is Secured another wire D, that is retained stretched by having its opposite end secured to one arm of a centrally-pivoted short lever 5, the pivot of which is secured tothe opposite end wall of the chamber B. To the opposite end of the lever 5 is secured anotherv Wire D, that is retained stretched by having its opposite end secured to one arm of a vertically-pivoted short lever 6, thepivotofwhich is secured to the opposite end wall of "the chamber B. To the opposite end of-the lever 6 is secured another wire D, that is retained stretched by havingits opposite end secured tow-the central portion of a longer lever-ck, through the medium of a strong coiled spring; K, having one endsecured-to said central:. portion of the lever and: the otherrend tou the frameof the car Saidwlever khasonev end 70 pivotedto the frame ot=the carand-itss opposite end 70 can beconnecteddirectly byg means of a rodrlc (shown in the diagra'm rep resented-in Fig.6) with the valive-stemh Ofn the end valveshlocated at one end of the can and with the end valves at the 'oppositeendby the rod 70 having one endattached-to the: free end ofthe lever 70, ifithe spring K is made powerful: enoughto operate all theendwalves: and. the-registers on both sides of :the=.-car;- but I prefer to use auxiliary means; torh'elp; the-spri-ng K- to-accomplishwthis operation: This consists intthe employmentof-some of r the-powerv stored in theuair-resenvoirv-orr traimservi-ce-pipe L of the air-brake now used'upon nearly all passenger-cars;

Air under pressure. is conducted fromrthe; trainservicepipe L througha lpipe l that= hasa horizontal;branch"wit-hin one of theain' chambers Btoan-air-cylinder Mlocatedpref erablyalsoin said air-chamber; but to'control the admission of air: under :pressure to said: cylinder andits subsequent issue therefrom a three-way-cockm is placed'upon saidpipe Z. 'lheplug of said cock'hasa'handl'e m ex tended on one side thereof that ispivotallyt connected with one end-of aconnecti-ngmod maths opposite end-of which is pivotally connectedwith the free cnd of theleverk; VVithin the cylinder is placed a.1 piston-,the rod 01 of; which is pivotallyconnected with the middlei portion of a lever N eitherby means of-aatubular head on the end of said rod or by suit-" able links.- The lever N has one end pivoted at N to the frame ofthe car whi'lethe oppo-: site .end is normally ret-racted toward the cylinder M bya spring N that has oneend secured tothe free end of the lever .N-and the opposite end to the frame of the can; Adja-; cent to said free end theleverN has also-pivoted thereto one end of-a rodcp, the'oppositeend of which is pivotally connectedwith the-crank-stem h ofthe valve-h on-one-side: of @the car. To operate the valves =h on the oppositesi-deof the car, a bell-crank lever q, pivoted to the frame-of the car, hasone end pivoted to the rodp, while the opposite end has. pivotedth'ereto a connecting-rod that extends across the top of the car and has connected thereto one arm of a T-lever g Said lever is pivoted about the middle of its length to the frame of the car and has one arm connected by means of a link with the stem h of the air-valve on the opposite side of the car. To-said armot said lever g is also pivot-ally united a rod g that operates the valve h at the opposite end of the car. To the opposite arm of the T-lever q there is pivotally connected a rod 1" to which the stem of each airregis'terd on one side-of the car is attached, preferably pivotally. It has been described 110w the lever N,- bymeans of the rod 19, operates-the air-valve 72 at one end of the car.

To said lever-aN thereds-also pivotally at-- tached a rod g that has-its opposite end connectedgvith the air-valveh at the'opposite endot thercaru To reciprocate:the-registerrod r 'on.the=side1of the'car occupied by the;

laterally, but whenthewtemperaturehas become cooler andthe wires'in contracting overcome thBvtGl'lSiOll-Of the spring, K-the plug of said-cock again occupies the position shown in F-ig,-;5,'the=air in thecylinder isallowed to escape through said .cock: and the piston re sumeseits position as. in-Fig. 4, under the ac tion of thespri-ng N upon-the piston-rod;

Having,now-fullydescribed myinvention, I claim 1. In combination-withnthe body of a car having;; air chambers :in-its top and :fluesin' the-ends-oflsaid chambers, val ves-- h in said fiues a ser-ies ofwires -D,-pivoted levers unitingsthem,-a spring retaining-said wires under tensiornandrods andlevers uniting them with the valves hv substantially as described.

2. The combinationof thebodyota ear having an air chamber in its toprand flues'in the endsof said chamber, valves 9 and h in saidfiues, a seriesof wires Dypivoted levers.

unitingthem, a spring retaining said-wires undertension and rods and levers uniting them to'the valves hsubstantially as described.

3. .The combination of the bodyof a car having. air chambers in its topand dues in the ends :of said chambers, valves h'insaid flues,'air registers @in .the side walls of -said chambers,-a seriesof wires D, pivoted levers uniting them, a spring retaining said wires undertensiontand rodsand levers-uniting saidwiresrD; with the valves h and with the air registers substantially asdescribed.

4. Thezcombination of'the body of a car having air chambers in its top, vertical flues B from theends of said chambers horizontal flues A under the floor of the car and receiving the lower ends of the flues B air fines f in the ends of the air chambers, valves h in said air fines f, a series of wires D in the air chamber, pivoted levers uniting said wires, a spring retaining said Wires under tension, and rods and levers uniting the wires D with the valves h substantially as described.

5. The combination of the'body of a car having air chambers in its top and fines in the ends of said chambers, valves h in said fines, a series of Wires D, pivoted levers nnit-' ing them, a spring retaining said wires under tension, a pivoted lever is connected with the terminal wire of the series and with said spring, said lever being connected with one of said valves h substantially as described.

6. The combination of the body of a car having air chambers in its top and does in the ends of said chambers, valves h in said fines, a series of wires D connected together, a spring retaining said wires under tension, a pivoted lever is connected with the terminal wire of the series and with said spring, a pipe 

